System and method for interactive augmented reality experience

ABSTRACT

Systems and methods disclosed provided a virtual reality experience, including: a set of motorized pads for coupling to feet of a user; a means of communication between the set of motorized pads and a computing environment operating a virtual reality headset; such that the set of motorized pads are configured to provide pressure on a user&#39;s feet as an avatar within a virtual environment traverses the environment. Systems and methods disclosed further provide a multiuser virtual reality experience. Systems and methods disclosed further provide a multiuser experience including generation of a common environment viewable in the virtual reality headsets; and recording a tour including audio data as the first user describes the common environment.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. Ser. No. 17/215,375, filed Mar. 29, 2021, which is a continuation of U.S. application Ser. No. 17/094,460, filed Nov. 10, 2020, which is a continuation of U.S. Ser. No. 17/094,428, filed Nov. 10, 2020, which is a continuation of U.S. Ser. No. 17/086,909, filed Nov. 2, 2020, which is a continuation of U.S. application Ser. No. 16/945,765, filed Jul. 31, 2020, which is a continuation of U.S. application Ser. No. 15/931,958, filed May 14, 2020, which is a continuation of U.S. application Ser. No. 16/785,970, filed Feb. 10, 2020, which is a continuation of U.S. application Ser. No. 16/382,448, filed Apr. 12, 2019 (now U.S. Pat. No. 10,558,042, issued Feb. 11, 2020), which is a continuation of U.S. patent application Ser. No. 14/669,744, filed Mar. 26, 2015 which claims the benefit of priority of U.S. Provisional Patent Application Ser. No. 61/970,512, filed Mar. 26, 2014, entitled “VIRTUAL REALITY DEVICES AND ACCESSORIES”, owned by the owner of the present application and herein incorporated by reference in its entirety.

BACKGROUND

Virtual Reality (VR) headsets, such as the Oculus Rift®, are poised to become a significant new factor in computer environments, including gaming, virtual tourism, and the like. However, the same also present a number of challenges. Consequently, there is a need for improvements in VR headsets and accessories.

This Background is provided to introduce a brief context for the Summary and Detailed Description that follow. This Background is not intended to be an aid in determining the scope of the claimed subject matter nor be viewed as limiting the claimed subject matter to implementations that solve any or all of the disadvantages or problems presented above.

SUMMARY

The above needs are met in various ways by systems and methods according to present principles.

In one aspect, the invention is directed towards a system for providing a virtual reality experience, including: a set of motorized pads for coupling to respective feet of a user; a means of communication between the set of motorized pads and a computing environment operating a virtual reality headset; such that the set of motorized pads are configured to provide pressure on a user's feet as an avatar within a virtual environment traverses the environment.

Implementations of the invention include one or more of the following. The means of communication may be an RF link or a wired link. The avatar may be a player character in a videogame or a character in a virtual tour. The set of motorized pads may include a left pad and a right pad, corresponding to a user's left foot and right foot, and the set of motorized pads may be configured to provide pressure on the user's left foot as an avatar within the virtual environment steps down on the environment with their left foot, and where the motorized pads may further be configured to provide pressure on the user's right foot as an avatar within the virtual environment steps down on the environment with their right foot.

In another aspect, the invention is directed towards a method of providing a multiuser virtual reality experience, including: configuring a server to communicate with a first user computing environment, the first user computing environment coupled to a first virtual reality headset, the first user computing environment configured to generate a first avatar corresponding to the user, the first avatar situated within a common environment viewable in the first virtual reality headset; and configuring a server to communicate with a second user computing environment, the second user computing environment coupled to a second virtual reality headset, the second user computing environment configured to generate a second avatar corresponding to the user, the second avatar situated within the common environment viewable in the second virtual reality headset.

Implementations of the invention may include one or more of the following. The method may further include configuring the server to allow the first user to provide a tour to the second user. The configuring the server to allow the first user to provide a tour to the second user may include configuring the server to cause the second avatar to automatically follow the first avatar as the first avatar moves within the common environment. The server may be a social networking server. For example, where the server is a server of a social networking site, the same may allow the first user to indicate entries on a social networking page corresponding to the first user, and to provide audio commentary before, during, or after, the indication. The tour and the audio commentary may be recorded for later playback. The indication of entries may be via the first avatar pointing at an asset corresponding to the entry. The entries may include textual entries, audio entries, photographic entries, or video entries. The method may further include receiving an asset from a third-party source distinct from the social networking page corresponding to the first user, and configuring the server to allow the tour to include the received asset.

In another aspect, the invention is directed towards a non-transitory computer readable medium, including instructions for causing a computing environment to perform the above method.

In another aspect, the invention is directed towards a method of providing a multiuser virtual reality experience, including: configuring a server to communicate with a first user computing environment, the first user computing environment coupled to a first virtual reality headset, the first user computing environment configured to generate a common environment viewable in the first virtual reality headset; and recording a tour including audio data as the first user describes the common environment.

Implementations of the invention may include one or more of the following. The server may be a server of a social networking site, and the common environment may include visual depictions of entries from a social networking page corresponding to the first user, and the method may further include configuring the server to allow the first user to indicate the entries and to provide audio commentary before, during, or after, the indication.

This Summary is provided to introduce a selection of concepts in a simplified form. The concepts are further described in the Detailed Description section. Elements or steps other than those described in this Summary are possible, and no element or step is necessarily required. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended for use as an aid in determining the scope of the claimed subject matter. The claimed subject matter is not limited to implementations that solve any or all disadvantages noted in any part of this disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flowchart of a method according to present principles.

FIG. 2 is a schematic illustration of a system according to present principles.

FIG. 3 is another schematic illustration of a system according to present principles.

FIG. 4 is another schematic illustration of a system according to present principles.

FIG. 5 is another flowchart of a method according to present principles.

FIG. 6 is another schematic illustration of a system according to present principles.

Like reference numerals refer to like elements throughout. Elements are not to scale unless otherwise noted.

DETAILED DESCRIPTION

VR headsets, while providing high degrees of immersion, can also be very disorienting to a user. Accordingly, it can be helpful to users to have player character (PC) avatars move at a slow rate through the online environment. If a game or online environment is designed for VR, then the PC speed within the environment can be designed to be slow or below a predetermined threshold, e.g., less than 5 mph or 10 mph as measured within the online environment. If the game environment or game application is being retrofitted for VR, then the PC speed can be slowed down to the levels described.

Another disorienting aspect is that one typically games or performs virtual tourism while sitting down, while the PC is walking around within the online environment. This can be disorienting too, if for no other reason than the height differential between standing and sitting.

Various solutions are available. In one implementation, and referring to the flowchart 10 of FIG. 1 and the schematic diagram of the system 20 of FIG. 2, motorized pads 32 and 34 may be placed on the feet of a user 18 and interfaced with the game engine 28 running on a computing environment 22. Alternatively, a frame buffer 26 may read the display 24 and estimate when character appendages (responsible for movement) are striking a surface. The estimation may be performed by a VR module 36 running on the computing environment, or alternatively the VR module may run within a VR headset. When the user walks through the environment, the motorized pads sequentially push up on the pads of the feet of the wearer. The interfacing may be, but is not limited to be, such that when the PC's left foot makes a step in the online environment, the left motorized pad is activated. When the PC's right foot makes a step, the right motorized pad is activated. Speed changes may be recognized, as can force with which a foot strikes the surface, e.g., whether the user is walking delicately or running hard. Standing in place can be simulated by relatively constant pressure on each foot (leaning may also be accommodated). The motorized pads may be conveniently disposed on a surface on which a user rest their feet, or within footwear.

In one method, a signal may be received from the game engine that a character is moving (step 12), and in some cases the signal may even indicate whether a left foot or right foot is currently moving. In some cases the movement, and/or a particular appendage moving, may be detected using a frame buffer analyzing the display (step 14). A VR module, or other input/output module within the game, may then provide an impression on the feet of the user corresponding to the movement of the player character within the game or other virtual environment (step 16). Such an impression may be performed using, e.g., a motorized pad.

It is noted that the accuracy of the motorized pads need not be perfect. So long as the user generally feels forces against their feet, the immersion may be maintained.

Another disorienting factor comes from the lack of vision outside of the VR headset, and in particular the aspect that if a user moves their hands up in front of their face, they do not see their hands. While several hand and body sensors exist and can be used to detect when hands should be rendered, such as generally complicated and too expensive for most users. Accordingly, in a system 30 illustrated in FIG. 3, a simple low resolution camera 42, mounted on the VR headset 38, may be employed to detect the approximate position of the user's hands and feed the same into the game engine to allow for the rendering of “approximate” versions of the user's hands.

Various benefits inure to such systems. First, the system may scale to higher resolutions as cameras become higher resolution, cheaper, and lighter (weight is an important factor for inclusion onto a headset). Camera position on a headset is convenient for visualization as there is unity in that what the camera sees is the same as what the user would expect to view from their eye position within the headset.

Another important application concerns multiplayer uses. In particular, and referring in particular to the system 40 depicted in FIG. 4, two users 18A and 18B may each have a respective VR headset 38A and 38B and may be in data communication with each other via a communications link 44, e.g., over the Internet, Bluetooth, LAN, WLAN, cellular communications, NFC, or any other sort of communications technology existing now or developed later. The client application on each person's system, e.g., computing environments 46A and 46B, respectively, which control operations on VR headsets 38A and 38B, may be a thin client or a substantial one. It is noted here that the headsets 38A and 38B may also be embodied by augmented reality (AR) headsets as well. In addition, the headsets may well incorporate all the computing functionality needed to perform the applications described here; this may be particularly true as processor power continues to increase along with miniaturization. The systems and methods according to present principles may work well with both types of systems.

Alternatively, the client systems may communicate via a web application or a hybrid system where one user employs a standalone client and another a web application. The web application or standalone client may form a portion of a network such as a social network where communications occur over one or more network servers 48. For example, a Facebook® application may employ VR headsets and users may be thereby enabled to communicate with each other. In this system, where previously members would communicate with each other via Facebook video or voice chatting, a VR communication application may advantageously take advantage of the virtual reality SDK, e.g., Oculus Rift® SDK, to perform similar functionality.

However, in systems and methods according to current principles, users may go far beyond just seeing each other. For example, each user may have associated therewith an avatar, and various levels of avatar customization can be allowed. In some cases, a selection of hair lengths, hair colors, facial shapes, skin colors, body types, heights, eye colors, and the like, may be employed to allow customization of an avatar. In more advanced implementations, users may be permitted to submit photographs of their head or their entire body to allow a three-dimensional reconstruction of the same to be created and employed in the simulation.

In a particular implementation of a VR simulation within a social network, a “page tour” functionality is enabled where users can give tours of their social networking page to a friend or other reviewer. Users may even record (within the application) a video of such tours, so that others may be enabled to view the recorded tour at their convenience. In a page tour, a first user leads a second user on a tour of the events chronicled on the first user's social networking page. For example, the users may appear to walk down a timeline, with various pictures at respective various locations in time. The first user may point out aspects of the photos or videos to the second user, and one or both users may “teleport” to other pages by following links on the first user's social networking page. For example, if in the past the first user “checked in” at the Eiffel Tower in France, and the first user was giving a tour including that check in to a second user, the first user (or the second user) may click on a link to view a third-party three-dimensional reconstruction of the Eiffel Tower, so as to allow the first user to give a tour of the Eiffel Tower to the second.

In the same way, the first user may “teleport” to a relative's page to point out various family members or the like.

Other variations will also be understood. For example, the background of the virtual reality seen may not be just “black” or static. For example, if the first user is giving a tour of friends to a second user, French scenes may provide a backdrop, and French music may be played as an audio file.

In a general implementation, as shown in the flowchart 50 of FIG. 5, a first step is that users become (or already are) friends on a social network, or are otherwise associated within a network, such that a second user is allowed to view aspects and personal information of the first user (step 52). Alternatively, a first user may invite the second user to a tour.

Using virtual reality or augmented reality, the users become co-located (step 54), such that each can see the other, e.g., via the avatars described above, or in other ways. The first user then commences to give a virtual reality tour of the assets available to them, e.g., on a Facebook timeline (step 56). As noted, third-party assets may be incorporated if desired, e.g., to give a virtual tour of the Eiffel tower.

The tour may be in real-time, with both users using virtual reality headsets at the same time, or the first user may record their tour for playback in virtual reality to one or more other users at a later time. For example, such may afford the opportunity for a first user to record a life tour for playback to relatives, friends, and loved ones, e.g., as part of a genealogical history or autobiography. The same may be used in hospice situations to record a life history. The same may also form part of an ongoing VR journal.

Other variations will also be understood. For example, and referring to the system 60 of FIG. 6, the immersive headsets described above may advantageously be combined with CPAP machines. In particular, CPAP machines are known to have a low degree of patient compliance because of their uncomfortable character. However, if the VR headset is made large enough, e.g., to envelop the user's nose, as illustrated in the implementation 66, an oxygen supply can be directed through nozzles into the user's nose, performing a positive pressure process, and accomplishing the goals of prior CPAP machines. Alternatively, nozzles 44 may be coupled to the headset 62 but located exterior thereof, e.g., below the headset via pressure hoses 68, so as to allow engagement or positioning adjacent the nasal canal of a user. In use, the same method is performed, with the nozzles directing a positive flow of air or oxygen into the nose of the patient, allowing positive pressure, and accomplishing the goal of prior CPAP machines.

Other variations will also be understood. For example, while VR devices have been disclosed, systems and methods according to present principles may also be implemented within the context of AR devices.

In addition, it is noted that systems and methods according to present principles can generally not be performed without an appropriate computing environment configured to perform the steps disclosed here. In addition, by performing the steps as described, the computing environment is able to operate in a more efficient manner than virtual reality or augmented reality systems of the prior art.

The system and method may be fully implemented in any number of computing devices. Typically, instructions are laid out on computer readable media, generally non-transitory, and these instructions are sufficient to allow a processor in the computing device to implement the method of the invention. The computer readable medium may be a hard drive or solid state storage having instructions that, when run, are loaded into random access memory. Inputs to the application, e.g., from the plurality of users or from any one user, may be by any number of appropriate computer input devices. For example, users may employ a keyboard, mouse, touchscreen, joystick, trackpad, other pointing device, or any other such computer input device to input data relevant to the calculations. Data may also be input by way of an inserted memory chip, hard drive, flash drives, flash memory, optical media, magnetic media, or any other type of file-storing medium. The outputs may be delivered to a user by way of a video graphics card or integrated graphics chipset coupled to a display that maybe seen by a user. Alternatively, a printer may be employed to output hard copies of the results. Given this teaching, any number of other tangible outputs will also be understood to be contemplated by the invention. For example, outputs may be stored on a memory chip, hard drive, flash drives, flash memory, optical media, magnetic media, or any other type of output. It should also be noted that the invention may be implemented on any number of different types of computing devices, e.g., personal computers, laptop computers, notebook computers, net book computers, handheld computers, personal digital assistants, mobile phones, smart phones, tablet computers, and also on devices specifically designed for these purpose. In one implementation, a user of a smart phone or Wi-Fi-connected device downloads a copy of the application to their device from a server using a wireless Internet connection. An appropriate authentication procedure and secure transaction process may provide for payment to be made to the seller. The application may download over the mobile connection, or over the WiFi or other wireless network connection. The application may then be run by the user. Such a networked system may provide a suitable computing environment for an implementation in which a plurality of users provide separate inputs to the system and method. In the below system where movements and actions within a virtual reality environment are contemplated, the plural inputs may allow plural users to input relevant data at the same time. 

What is claimed is:
 1. A method of operating an augmented reality environment using one or more network servers, the method comprising: establishing communications between one or more network servers and a first user computing environment, the first user computing environment coupled to a first augmented reality headset, the first augmented reality headset having a first augmented reality display; establishing communications between the one or more network servers and a second user computing environment, the second user computing environment coupled to a second augmented reality headset, the second augmented reality headset having a second augmented reality display; operating the one or more network servers using input from at least the second user computing environment to modify the first augmented reality display based on data associated with the second user computing environment to cause a display of an avatar associated with the second user computing environment in at least the first augmented reality display; operating the one or more network servers using input from at least the first user computing environment to modify the second augmented reality display based on data associated with the first user computing environment to cause a display of an avatar associated with the first user computing environment in at least the second augmented reality display; and based on data from a memory in the one or more network servers, modifying the first and second augmented reality displays and thereby causing a display of a first asset in the first augmented reality display, the first asset also displayed in the second augmented reality display, wherein the data from the memory in the one or more network servers is associated with or based on a social networking account, or the data from the memory in the one or more network servers is based on an entry associated with a social networking page associated with the social networking account.
 2. The method of claim 1, wherein the entry corresponds to a check in or a post on the social networking page associated with the social networking account.
 3. The method of claim 1, further comprising receiving input from a pointing device associated with the first user computing environment, the receiving input allowing a user to point at and select the first asset.
 4. The method of claim 1, wherein the first asset includes a visual depiction, and wherein the visual depiction is selected from the group including: an image, a textual entry, an audio entry, a video entry, or a combination thereof.
 5. The method of claim 1, further comprising operating the one or more network servers using input from at least the first user computing environment to cause a display of virtual user hands corresponding to the first user computing environment in the second augmented reality display, and further comprising operating the one or more network servers using input from at least the second user computing environment to cause a display of virtual user hands corresponding to the second user computing environment in the first augmented reality display, wherein the input from the first and second user computing environments is based on data from cameras associated with the first and second augmented reality headsets, respectively.
 6. The method of claim 1, further comprising providing an invitation functionality, such that a first user can invite another user to a common environment associated with the avatars corresponding to the first and second user computing environments and the first asset, the another user associated with another user computing environment and another augmented reality display, and displaying the first asset in the another augmented reality display if the another user accepts the invitation, and subsequently displaying an avatar corresponding to the another user computing environment in the first and second augmented reality displays, and displaying the avatars corresponding to the first and second user computing environments in the another augmented reality display.
 7. The method of claim 1, further comprising: receiving input from the first or second user computing environment customizing the respective avatar associated with the first or second user computing environment, and thereby customizing at least one of avatar hair color, hair shape, face shape, or body shape; or receiving input from the first or second user computing environment of a computer-generated head or body, and using the input to generate a portion of the respective avatar associated with the first or second user computing environment.
 8. The method of claim 1, further comprising causing a display of another asset when a link associated with the first asset is activated, the another asset displayed at least in the first and second augmented reality displays.
 9. The method of claim 1, further comprising playing back audio during the display of the first asset.
 10. The method of claim 1, wherein the establishing communications between the one or more network servers and the first and second user computing environments are such that the first and second user computing environments communicate via a web application, a standalone client, or a hybrid system, wherein the hybrid system is such that the first user computing environment communicates to the one or more network servers via a web application and the second user computing environment communicates to the one or more network servers via a standalone client.
 11. An augmented reality headset, comprising: a first augmented reality display, the first augmented reality display configured to be coupled to a first user computing environment, wherein the first user computing environment includes a non-transitory computer-readable medium comprising instructions for causing the first user computing environment to: receive, from one or more network servers, data associated with a different user computing environment that is associated with a different augmented reality headset that is associated with a different augmented reality display, and modify the first augmented reality display to cause a display of an indicator of the data associated with the different user computing environment in the first augmented reality display; receive, from a memory in the one or more network servers, data associated with a first asset, wherein the first asset is from, is associated with, or is based on a social networking page or a social networking account associated with the first user computing environment; and based on the received data associated with the first asset from the memory in the one or more network servers, modify the first augmented reality display to cause a display of the first asset in the first augmented reality display; wherein the first asset is also caused to be displayed in the different augmented reality display, and wherein the view of the first asset is displayed in the first augmented reality display at substantially the same time as the view of the first asset is displayed in the different augmented reality display associated with the different augmented reality headset.
 12. The headset of claim 11, wherein the first user computing environment is integrated in the augmented reality headset.
 13. The headset of claim 11, wherein a camera is disposed on or as part of the augmented reality headset, and wherein the instructions further cause the first user computing environment to receive data from the camera, and wherein the received data from the camera indicates user hand position data, whereby virtual user hands associated with the first user computing environment may be caused to be displayed in the different augmented reality display.
 14. The headset of claim 11, wherein the indicator of the data associated with the different user computing environment is an avatar associated with the different user computing environment, and wherein the instructions further cause the first user computing environment to modify the first augmented reality display to display the avatar associated with the different user computing environment in the first augmented reality display.
 15. The headset of claim 11, wherein the instructions further cause, at least in part, a display of a first avatar associated with the first user computing environment in the different augmented reality display, and wherein the first user computing environment, or the one or more network servers, or both the first user computing environment and the one or more network servers, are further configured to: receive input from the first user computing environment customizing the first avatar, the input customizing at least one of avatar hair color, hair shape, face shape, or body shape; or receive input from the first user computing environment of a computer-generated head or body, and use the input to generate a portion of the first avatar.
 16. The headset of claim 11, wherein the instructions further cause the first user computing environment to receive input from a pointing device, the received input allowing a user to point at and select the first asset.
 17. A method for causing a display of an asset in an augmented reality headset, the augmented reality headset networked to other augmented reality headsets, comprising: receiving, at a first user computing environment coupled to a first augmented reality display, from one or more network servers, data associated with a different user computing environment that is associated with a different augmented reality headset that is associated with a different augmented reality display, and modifying the first augmented reality display and thereby causing a display of an indicator of the data associated with the different user computing environment in the first augmented reality display; receiving, from a memory in the one or more network servers, data associated with a first asset, wherein the first asset is associated with or based on a social networking account, or is associated with an entry associated with a social networking page associated with the social networking account; and based on the receiving data associated with the first asset from the memory in the one or more network servers, modifying the first augmented reality display and thereby causing a display of the first asset in the first augmented reality display; wherein the first asset is also caused to be displayed in the different augmented reality display, and wherein the displaying the first asset in the first augmented reality display is performed at substantially the same time as the display of the first asset in the different augmented reality display associated with the different augmented reality headset.
 18. The method of claim 17, wherein the first user computing environment is integrated in the augmented reality headset.
 19. The method of claim 17, wherein the augmented reality headset further comprises a camera, wherein the camera is disposed on or as part of the augmented reality headset, and further comprising receiving data from the camera at the first user computing environment and using the received data to generate data associated with virtual user hands associated with the first user computing environment, wherein virtual user hands may be caused to be displayed in the different augmented reality display.
 20. The method of claim 17, wherein the indicator of the data associated with the different user computing environment is an avatar associated with the different user computing environment, and further comprising modifying the first augmented reality display and thereby displaying the avatar associated with the different user computing environment in the first augmented reality display.
 21. The method of claim 17, wherein a first avatar associated with the first augmented reality headset is caused to be displayed in the different augmented reality display, and wherein the method further comprises: receiving input from the first user computing environment customizing the first avatar, customizing at least one of avatar hair color, hair shape, face shape, or body shape; or receiving input from the first user computing environment of a computer-generated head or body, and using the input to generate a portion of the first avatar.
 22. The method of claim 17, wherein the method further comprises receiving input from a pointing device coupled to the first user computing environment, the receiving input allowing a user to point at and select the first asset.
 23. A non-transitory computer-readable medium associated with a first user computing environment, the first user computing environment coupled to a first augmented reality display within a first augmented reality headset, the non-transitory computer-readable medium comprising instructions for causing the first user computing environment to: receive, from one or more network servers, avatar data associated with a different user computing environment that is associated with a different augmented reality headset that is associated with a different augmented reality display, and use the avatar data to modify the first augmented reality display to cause a display of an avatar associated with the different user computing environment in the first augmented reality display; receive, from a memory in the one or more network servers, data associated with a first asset, wherein the first asset is from, is associated with, or is based on a social networking page or a social networking account associated with the first user computing environment; and based on the received data associated with the first asset from the memory in the one or more network servers, modify the first augmented reality display to cause a display of the first asset in the first augmented reality display; wherein the first asset is also caused to be displayed in the different augmented reality display, and wherein the first asset is displayed in the first augmented reality display at substantially the same time as the first asset is displayed in the different augmented reality display associated with the different augmented reality headset.
 24. The medium of claim 23, wherein the first user computing environment is integrated in the first augmented reality headset.
 25. The medium of claim 23, wherein the instructions further cause the first user computing environment to receive data from a camera disposed on or as part of the first augmented reality headset, whereby the data from the camera is used at least in part to display virtual user hands in the different augmented reality display.
 26. The medium of claim 23, such that a first avatar associated with the first user computing environment is caused to be displayed in the different augmented reality display, and wherein the instructions further cause the first user computing environment to: receive input customizing the first avatar, the input customizing at least one of avatar hair color, hair shape, face shape, or body shape; or receive input of a computer-generated head or body, and use the input to generate a portion of the first avatar. 